Lampshade for E27 lamp socket

I designed these lampshades for my 2 bedside lamps with E27 lamp socket.
Because my resin printer has only 120mm depth i used an ellipsoid form.
I also added the FreeCAD file to fit these lampshades to other sizes etc.

This was my first design in FreeCAD. Useful criticism welcome

These lampshades have a wallthickness of 1.5mm. I think a little bit mor would be better because I got some little cracks maybe because of tension.